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.NET Onecode Generator for .NET, ASP.NET, C#, VB.NET

It is also known as OneCode 4CB, USPS 4CB, 4-CB, 4-State Customer Barcode, USPS OneCode Solution Barcode

Quick Navigate
  1. Barcode Introduction
  2. Encoding Data Scope
  3. How to Generate Barcode Image in IIS without Visual Studio .NET?
  4. How to Generate Barcode Image through Web Controller in ASP.NET?
  5. How to Generate Barcode Image through Windows Controller in .NET?
  6. How to Generate Barcode Image in .NET class?
  7. How to Save Barcode Image?
  8. Barcode Property Settings
For trial version only, we will randomly print message BarcodeLib.com or Trial on the generated barcode image.
1. Barcode Introduction
OneCode 4-State Customer Barcode (4-CB) is the next generation in the evolution of USPS barcode technology. It does not replace existing barcodes - it offers a more effective alternative. Partnering with the Mailing Industry, the Postal Service developed the 4-CB which increases the amount of information carried on letter and flats mail pieces and allows for expanded tracking capability, creating greater visibility into the mailstream.
4-CB is a height-modulated barcode using four distinct, vertical bar types. It encodes a 31-digit string into 65 vertical bars each representing one of four possible states: full bar, ascender, tracker, and descender.

4-State Barcode Bars
4-CB carries a payload 31 digits comprised of the following elements.
Type Field Digits
Tracking Code Barcode Identifier 2 (2nd digit must be 0?)
Special Services 3
Customer Identifier 6
Sequence Number 9
Routing Code Delivery Point ZIP Code 0, 5, 9, or 11
Table 1 - USPS OneCode SOLUTION Barcode Data Fields
For each of the fields in Table 1, except the Routing Code, leading or trailing zeros shall be provided to achieve the correct size. Spaces and nulls are not acceptable characters for padding. For ZIP Codes, which have one of four lengths, encoding shall provide padding beyond the digits to be encoded. No error detection and correction, such as a checksum with POSTNET or PLANET, shall be included as part of the data fields. The OneCode Barcode Data Fields are described as follows:
  • The Barcode Identifier is assigned by USPS for the type of tracking service. This is two digits, with the second digit in the range of 0-4
  • The Special Services is assigned by USPS for any special services on the mailpiece. The allowable encoding range is 000-999
  • The Customer Identifier is assigned by USPS as a unique identifier for each OneCode SOLUTION customer. The allowable encoding range is 000000?99999
  • The Sequence Number is assigned by the mailer for tracking mailpieces. The allowable encoding range is 000000000-999999999
  • The Delivery Point ZIP Code is assigned by the mailer for routing the mailpiece. This replaces POSTNET for routing the mailpiece to its final delivery point. The length may be 0, 5, 9, or 11 digits. The allowable encoding ranges are no ZIP Code, 00000-99999, 000000000-999999999, and 00000000000-99999999999
2. Encoding Data Scope
Onecode Barcode for .NET, ASP.NET supports:
  • 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
3. How to Generate Barcode Image in IIS without Visual Studio .NET?
  1. Copy folder barcode from your downloaded package, to your IIS folder, e.g. C:\Inetpub.
  2. Create a new virtual directory, named barcode.
  3. Restart IIS.
  4. Test your installation, goto http://YourDomain:port/barcode/linear.aspx?Type=ONECODE&Data=12345678
  5. To create barcode image in your ASP.NET application, you can pass the url to IMG tag src value. For example, <img src="http://YourDomain:port/barcode/linear.aspx?Type=ONECODE&Data=12345678" />
4. How to Generate Barcode Image through Web Controller in ASP.NET?
  1. Integrate Barcode Controller to your ASP.NET project.
    1. Copy BarcodeLib.Barcode.dll to the folder bin of your web application the barcodes are needed for.
    2. Copy linear.aspx file to your web application.
  2. Add barcode library to your Visual Studio Toolbox.
    1. Open Toolbox in Visual Studio. Click menu View, and check submenu Toolbox.
    2. Right click Toolbox, click menu Choose Items...
    3. Goto .NET Framework Components tab.
    4. Check component LinearWebForm, and its namespace is BarcodeLib.Barcode.Linear
    5. If no component found, click Browse... button and select BarcodeLib.Barcode.dll file.
  3. Now you can see the component displayed on Toolbox. You can drag LinearWebForm on your aspx page, change barcode setting through properties window.
5. How to Generate Barcode Image through Windows Controller in .NET?
  1. Add Reference BarcodeLib.Barcode.dll to your project. Do not copy the dll to the bin directory, Visual Studio will do so, during project compilation time.
    1. In your .NET windows project, right click mouse over Refereces in your Solution Explorer window. Then click menu "Add Reference ...".
    2. Add BarcodeLib.Barcode.dll to your project.
  2. Add barcode library to your Visual Studio Toolbox.
    1. Open Toolbox in Visual Studio. Click menu View, and check submenu Toolbox.
    2. Right click Toolbox, click menu Choose Items...
    3. Goto .NET Framework Components tab.
    4. Check component LinearWinForm, and its namespace is BarcodeLib.Barcode.Linear
    5. If no component found, click Browse... button and select BarcodeLib.Barcode.dll file.
  3. Now you can see the component displayed on Toolbox. You can drag LinearWinForm on your form, change barcode setting through properties widnow.
6. How to Generate Barcode Image in .NET class?
  1. Add Reference BarcodeLib.Barcode.dll to your .NET project (ASP.NET website, Forms, any .NET project)
    In your .NET class. 
    BarcodeLib.Barcode.Linear.Linear barcode = BarcodeLib.Barcode.Linear.Linear();
barcode.Data = "your barcode data";
// other barcode settings.
                        
// save barcode image into your system
barcode.drawBarcode("c:/barcode.gif");
Above code written in C# 2005

* Please set properties UOB and Resolution, before you set any image size related properties like barWidth, margin.
7. How to Save Barcode Image?
In Windows Controller, just call method SaveAsImage(string filename). e.g. SaveAsImage("C:\barcode.gif");
8. Barcode Property Settings
  • Set the Type property to BarcodeType.ONECODE
  • Set the Data property with the value to encode. Type is string.
    The valid data length should be 20, 25, 29, or 31.
  • Setting up barcode image size:
    • Set property UOM (Unit of Measure) for properties BarWidth, BarHeight, LeftMargin and TopMargin.
      Default is UnitOfMeasure.Pixel (0). Valid values are UnitOfMeasure.Pixel (0), UnitOfMeasure.CM (1), UnitOfMeasure.Inch (2).
    • Set the BarWidth (for bar cell width) and BarHeight (for bar cell height) properties. Both types are float.
    • Set the LeftMargin and TopMargin properties, and types are both float.
    • Set the Resolution property (Value is expressed in DPI - Dots per inch). This property is not working in Windows Controller, we will use end user's windows resultion.
  • Setting up text style in barcode image:
    • Set the ShowText properties. If this value is true, barcode data will be displayed with the barcode.
    • Set the TextFont property. The font used to display text in barcode image.
  • Set the Format property for barcode image type. Value can be "gif", "jpg", "png", and "bmp", default is "png".
  • Set BearerBars property, if you want to draw borders around barcode image. Value can be BearerBar.None (no bear bars), BearerBar.Frame (top, bottom, left, right borders drawn), BearerBar.TopBottom (only top, bottom's are drawn).
  • Set Rotate property, if you want to rotate barcode image.
    Value can be
    0 (RotateOrientation.BottomFacingDown),
    1 (RotateOrientation.BottomFacingLeft),
    2 (RotateOrientation.BottomFacingUp),
    3 (RotateOrientation.BottomFacingRight)
  • AddCheckSum property is not applied.

All .NET Barcode Symbologies:

.NET Barcode Tutorial & FAQ







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